Double automatic window-lock.



No. 825,377- PATENTED JULY 10, 1906. G, 6: J. A. BUTTRESS. DOUBLEAUTOMATIC WINDOW LOCK.

APPLICATION FILED SBPT.25.1905.

"mt NORRIS PETERS co., WAsmNoroM, u. c.

UNITED STATES PATENT OFFICE.

GEORGE BUTTRESS AND JOSEPH ALEXANDER BUTTRESS, OF LOS ANGELES,CALIFORNIA.

DOUBLE AUTOMATIC WINDOW-LOCK.

Specification of Letters Patent.

Patented July 10, 1906.

Application filed September 25, 1905- Serial No. 280.106.

To all whom, it may concern:

Be it known that we, GEORGE BUTTREss and JosEPH ALEXANDER BUTTRESS,citizens of the United States, residing at Los Angeles, in the county ofLos Angeles and State of California, have invented a new and usefulDouble Automatic l/Vindow-Lock, of which the following is aspecification.

An object of our invention is to provide a double automatic window-lockwhich will automatically lock the upper and lower sash of a window andis operated by a single operating-lever that unlocks both the upper andlower sash. This lock is a time-saving lock, as it is so constructedthat a person can close either upper or lower sash instantly with theuse of only one hand, a push downward or upward closing the window andthe lock instantly locking it closed or at any desired nearly-closedposition in its travel.

The lock is constructed to make it impossible for the lower sash to beraised or the upper sash to be lowered from the outside and also toallow the window-sashes to be left partly open for ventilation and stillsecurely locked, to provide a lock simple and durable in itsconstruction and positive in its action and one that can be easilyattached to old or new buildings without interfering with the weights orwoodwork.

Ve attain these objects by the device illustrated in the accompanyingdrawings.

Figure 1 is a fragmental perspective view showing a windowlock embodyingthis invention in place in a window, fragments of which are shown. Fig.2 is an elevation of the lock, concealed parts being indicated by dottedlines. Fig. 3 is an edge view of the sash-lock. Fig. 4 is a view fromthe left of Fig. 2. Fig. 5 is a section on line a Fig. 3. Fig. 6 is anedge view of the upper and lower sash of a window provided with thislook.

Fig. 7 is a longitudinal mid-section of one of the sash-racks. Fig. 8 isa reduced view of a blank from which the lock-frame is stamped andpressed. Dottedlines show lines of bending to form the frame.

In a general way 1 indicates a lock, which is preferably securelyfastened on the lefthand side of a window-frame 2 by screws 3, passedthrough holes 4 in the main body 5 of the frame of the lock.

6 7 designate racks on the lower and upper sashes, respectively, thesame being preferably strips of steel about half the length of thewindow-sashfitted at the left-hand side of the edge of the sash andsecured by means of screws 8. The racks are provided with holes 9 atintervals to receive the catches of the lock. The rack 6 is fastened onthe lower sash near the'outer side thereof, and the rack 7 is fastenedto the outer sash near the inner side thereof, so as to avoid thesash-cords and to make it easy for carpenters to put themon and also tosecure compactness and strength.

10 11 designate detents carried by the frame 5 and oppositely beveled.The detent for the inner sash is beveled on its upper face 12 and thatfor the outer sash is beveled on its under face 13.

14 designates springs acting on collars 15, which are fixed to thedetents 10 and 11 to hold said detents in their engaging position. Saidcollars are illustrated in Fig. 5 and consist of a split washer pressedinto a circle-slot 16 on the shafts or plungers 17 18, respectively, ofthe detents 10 and 11.

19 is a lever comprising a thumb-piece or handle 20, a detent-operatingarm 21, and a rock-shaft 22, which shaft is pivoted at its ends inbearings 23 24, formed at the ends of the main body 5 of the lock-frame,said ends being pressed into form at right angles to the main plate orbody 5 of the lock.

25 is a cross-bar engaging the collars 15, which are held thereagainstby the springs 14, which hold the detents 10 and 11 in catchingposition. The arm 21 of the lever 19 engages the cross-bar 25, so thatwhen the thumb-piece 20- is operated the cross-bar 25 will act on thecollars and retract the detents 10 and 11, thus at one motion releasingboth sashes, allowing them to be moved freely. When the handle isreleased, the detents will beforced into engaging position by thesprings 14, whereupon when the inner sash is lowered or the outer sashraised the same will be firmly locked. The cross-bar is loose on theshafts 17 and 18, so that either of the detents may be forced inward toallow the rack to pass the detents in closing either sash withoutdisturbing the lever or the other detent.

The frame of the lock is preferably constructed of a single sheet ofmetal stamped into a blank 26, provided with screw-holes 4, thumb-piecehole 27, detent-holes 28 29, perforated bearing extension 23, case andbearwith detents not having beveled ends.

ing extension 2 1, provided with rivet-lugs 30 and with holes 31 forsaid lugs.

In manufacturing the lock the blanks 26 may first be stamped out and theholes stamped therein at one operation and may i aslant, as indicated indotted lines in Fig. 3,

so that the lever 19 may be brought into place by inserting thethumb-piece 20 through its hole 27, the opposite end of the rock-shaftthrough its bearing-hole 33, and then springing the other end of therockshaft into the hole 34 of its bearing 23. Then by striking thebearing extension 23 with a hammer the same may be brought at rightangles to the faceplate 5, whereupon .the lock is completed without theuse of screws or detached rivets.

On account of the detents 10 and 11 being oppositely beveled at 12 and13 an apertured bar may be stamped out and employed in connection. withthe detents and the same effect thereby obtained as if ratchet-barshaving beveled teeth were used in connection It is much easier toprovide detents with beveled ends than it would be to provideratchetbars having beveled teeth in the place of the apertured bars 6and 7, as shown in the drawings.

The arrangement of the rock-shaft 22, having a laterally-projectingframe 21 and a laterally-projecting thumb-piece 23 back of the insideplane of the window-casing, constitutes an inconspicuous and handyoperating device not so apt to be displaced as if the thumb-piece 23projected within the plane of the inner side of the window-casing.

The margin of the hole 27 forms a stop for the single thumb-piece 20 tolimit the move ment thereof to prevent the operating-arm 21 from lockingthe detents in the retracted position, whereby the detents automaticallylock the sash except when the thumb-piece 20 is being manipulated.

What we claim is g 1. A window-lock comprising a frame, a rock-shaftmounted in said frame, being provided with a thumb-piece and anoperatingarm, spring-pressed detents having plungers each provided witha washer fixed thereto, and a bar operated by said arm and engaging saidwashers for retracting said detents.

2. In a sash-fastener, a frame, detents mounted in said frame andoperating toward and from the sash, a cross-bar loosely mounted on saiddetents for retracting the same and allowing them to be retractedindependently of each other, and a lever for operating the cross-bar.

3. A look comprising a face-plate having a housing formed integraltherewith, said housing being provided with a plurality of openings anda plurality of diagonally-disposed bolts within. said housing andarranged to extend through said openings springs around said bolts,washers fixed thereon, a bar con necting said bolts, and a lever foroperating said bar.

4. The combination with the frame and sashes slidable therein, of a lockin operative relation to said sashes, said lock comprising a face-platehaving a housing formed integral therewith, said face-plate and housingbeing provided with a plurality of openings, bolts Within said housingprotruding through said openings and spring-actuated means for holdingsaid bolts normally protruding, a bar for connecting and operating saidbolts independently of each other, and a leverfor operating both bolts.

In testimony whereof we have hereunto set our hands, at Los Angeles,California, this 29th day of November, 1905.

GEORGE BUTTRESS. JOSEPH ALEXANDER BUTTRESS.

In presence of JAMES R. TowNsEND, JULIA TOWNSEND.

